I had my fair share dealing with salvaging fighters, but decided to not even bother. AI ships in general handle salvaging terribly, but what you wrote is just a tip of an iceberg. To me main problem is AI try to housekeep so hard, that it bothers with the tiniest pieces of junk. I only use salvaging when stumble upon big delerict ships. Just quickly converting one of my drones and do work manually targeting only the juciest spots.
In the meantime a handful of information about AI fighters.
If I remember correctly from 0.12 the sectors occupied by player vessels stay loaded. So you are able to set-up mining operation when you are teaching pirates some manners or just pest control the Xsotans. However it seems that AI fighters doesn't always do their intended work while you're absent. Upon player entering the sector they resume normal operation. It's an inconsistent bug. I only tested it with one carrier equipped with crappiest mining laser I had.
Next thing is that carriers can't hyperjump while fighters are launched away. It's not a bug imo and I suppose it's intended feature, however it's quite dangerous. Situation: While your carrier following you ("escort me order"), you're jumping into "dark" sector and stumbling upon overwhelming enemy fleet. Instantly got attacked and forced to retreat. AI responding with launching fighters and commencing attack - so the carrier is basically destroyed. Best strat is of course to scout the sectors first, leaving mining fleet in safeish sectors. Just something to remember.
The last thing I noticed is more QoL thingy. The fighter "ram protecton" mechanics and they ability to dock efficiently. The "ram protection" mechanics is simple. Fighters still can be shot down by projectiles or energy beams, but can't be destroyed by ramming. Upon contact with hull of other ships, they just skidding on the surface or teleporting out of the way. Taking this mechanics into concideration I noticed that when dock is in some way recessed in hull, they often have trouble docking. Constantly hitting hull and therefore teleporting all over the place. Sometimes even bugging out in loop until carrier change its bearing.
That's all I've got this time. When I'll find someting new worth sharing I'll let you guys know. Peace.